Heya, Lone here!
I have a suggestion, say, you make a map using Map Editor. And its a hang out, for your friends. Say, your not on because your sick and your friends want to hang out in the room really bad, well, here's a fix-it-up type thing!
Maybe once the creator saves the map, they have the option to enable their guild or certain friends to have access to it no matter what, but say, if its your guild, you can't let anybody else in not in your guild, only the creator of the map may. Same with the friends list.
Maybe there can be a 'Kick' feature in private rooms. Say if someone is being rude and won't leave - Wala! Problem fixed.
One more suggestion.
Maybe there can be a 'Private Map Scroll'. Its a scroll that has all your private maps on it, or maps people allow you in! That way if your in the Fruit Bat Territory - And you want to go to one of your private rooms, but your town/dungeon scroll is cooling down? Then, no need to get flustered! Just used your Private Map scroll, click the map you want to go to, it gives you your code, then once you hit 'Okay', wala! In the map. c:
Oh, I understand for the first one. :3 You can only do it if you have time. ^^
For the kick feature - It would completely kick them out of the room though, right? And to prevent them from coming back in, the password changes for them - Only.
Oh, yes! I forgot to add the cooldown part, and thanks. c: